in afghanistan, a group of american soldiers took the stake to reenlist. david petraeus is about to become the next cia director and was there to say goodbye and thank you. >> under out that can never thank you enough. >> -- america can never say thank you and not. -- enough. >> nasa says it will be flying its air pollution research flight again tomorrow. the large plane carries nine scientific instruments that measure air quality. if you see that low-flying aircraft, there is no cause for concern. it will take place over the baltimore-washington corridor. >> there is much more ahead. >> a big welcome home for heroes returning home from war. we will take you to their arrival. >> md. special olympians are having a great day. >> there are some scattered storms out to our west. we will see how close they get tonight. it is 87 at the airport. [ female announcer ] keurig brews more than just hot coffee. now you can brew over ice for delicious iced coffee or tea. hot or cold, keurig is the way to brew everyone's favorite cup in under a minute. choose. brew. enjo